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Veseljchak [2.6K]
3 years ago
8

A student earned a grade of 80% on a math test

Mathematics
2 answers:
Brut [27]3 years ago
8 0

Answer:

24 problems

Step-by-step explanation:

equation: 80/100 = x/30

cross multiply: 100 * x = 80 * 30

multiply: 100x = 2400

divide each side by 100: x = 24

24 problems

I hope this helped, please mark Brainliest, thank you !!

mojhsa [17]3 years ago
7 0

Answer:

24

Step-by-step explanation:

30 x 80% is equal to 24.

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Milan is participating in a 4-day cross-country biking challenge. He biked for 48, 51, and 59 miles on the first three days. How
Ivahew [28]

Answer:

62 miles

Step-by-step explanation:

The formula for average is given as

Sum of values / Number of values

Let x = miles on the last day

Hence

48 + 51 + 59 + x/4 = 55

Cross Multiply

= 158 + x = 220

x = 220 - 158

x = 62

Therefore, he needs to bike 62 miles on the last day so that his average (mean) is 55 miles per day.

3 0
3 years ago
Only 7 and 8 I’m so confused
PSYCHO15rus [73]

Answer:

7) 178,978- 70,000

7) 827,717- 700

7) 257,708- 7,000

7) 426,672- 70

8) B- 121,211

Step-by-step explanation:

7) 178,978- the underlined number is 7 which the ten-thousand place. The underlined 7 is 70,000.

7) 827,717- The underlined 7 is is in the hundreds place which is 700.

7) 426,672- The underlined 7 is in the thousand place which is 7,000.

7) 426,672- The underlined 7 is in tens place which is 70.

8) The answer is B because when you correctly put the numbers in order it equals 121,211. For example, "One hundred twenty-one thousand" is 121,000. The next part says "two hundred eleven" which is 211. When you combine both parts together it equals 121,211.

8 0
4 years ago
Three consecutive integers have a sum of 72. find the integers
mariarad [96]

Set the first number as x.

Note that three consecutive integers are 3 numbers that are 1 greater than the previous.

(x) + (x + 1) + (x + 2) = 72

Simplify. Combine like terms

3x + 3 = 72

Isolate the x. Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS. First, subtract 3 from both sides

3x + 3 (-3) = 72 (-3)

3x = 69

Next, divide 3 from both sides

3x/3 = 69/3

x = 23

------------------------------------------------------------------------------------------------------------------------

23 is your first answer

Plug in 23 for each x.

------------------------------------------------------------------------------------------------------------------------

(x) + (x + 1) + (x + 2) = 72

(x) = 23

(x + 1) = 23 + 1 = 24

(x + 2) = 23 + 2 = 25

23, 24, 25 are your answers

------------------------------------------------------------------------------------------------------------------------

<em>~Rise Above the Ordinary</em>

4 0
4 years ago
Read 2 more answers
A town with a population of 5,00 grows 3% each year. find the population at the end of 10 years
sashaice [31]

Answer:

@staticlifestyle

Step-by-step explanation:

6 0
4 years ago
<img src="https://tex.z-dn.net/?f=%20%7B10%7D%5Ex%20%3D%205" id="TexFormula1" title=" {10}^x = 5" alt=" {10}^x = 5" align="absmi
My name is Ann [436]

Answer:

below

Step-by-step explanation:

10ˣ = 5

applying log to both sides

xlog 10 = log5

x = 0•699

8 0
3 years ago
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